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Sodium Hydroxide → 3-cyclopentyl-2-[4-(4,6-dimethyl-pyrimidin-2-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionic acid

HRID 2381390
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HRID 2381390 반응식
C[O:2][C:3](=[O:27])[CH:4]([N:11]1[C:16](=[O:17])[CH:15]=[C:14]([O:18][C:19]2[N:24]=[C:23]([CH3:25])[CH:22]=[C:21]([CH3:26])[N:20]=2)[CH:13]=[N:12]1)[CH2:5][CH:6]1[CH2:10][CH2:9][CH2:8][CH2:7]1.[OH-].[Na+]>O1CCCC1>[CH:6]1([CH2:5][CH:4]([N:11]2[C:16](=[O:17])[CH:15]=[C:14]([O:18][C:19]3[N:20]=[C:21]([CH3:26])[CH:22]=[C:23]([CH3:25])[N:24]=3)[CH:13]=[N:12]2)[C:3]([OH:27])=[O:2])[CH2:10][CH2:9][CH2:8][CH2:7]1
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4

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HCID 14798Sodium HydroxideHCID 668750953-cyclopentyl-2-[4-(4,6-dimethyl-pyrimidin-2-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionic acid methyl ester

생성물 1

HCID 579191953-cyclopentyl-2-[4-(4,6-dimethyl-pyrimidin-2-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionic acid수율 20.3%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

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온도
25 °C

실험 절차

A solution of 3-cyclopentyl-2-[4-(4,6-dimethyl-pyrimidin-2-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionic acid methyl ester (206 mg, 0.55 mmol) in tetrahydrofuran (4 mL) was treated with a 4N aqueous sodium hydroxide solution (0.17 mL) and was stirred at 25° C. for 4 h. The reaction was partitioned between water (3 mL) and ether. The aqueous layer was back extracted with ether. The aqueous layer was then acidified to pH 3-4 with a 1N aqueous hydrochloric acid solution. The resulting precipitate was filtered, rinsed with water (1 mL), and dried in vacuo to afford 3-cyclopentyl-2-[4-(4,6-dimethyl-pyrimidin-2-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionic acid as a white solid (40 mg, 20%); LC-MS: tR=3.71 min, 359 [M+H]+. HPLC: tR=7.02 min, 96.21% at 214 nm, 98.34% at 254 nm. 1H NMR (300 MHz, DMSO-d6): δ13.03 (broad, 1H), 8.12 (d, 1H, J=2.7 Hz), 7.19 (s, 1H), 6.85 (d, 1H, J=2.4 Hz), 5.36 (dd, 1H, J=10.5 Hz, J=4.2 Hz), 2.41 (s, 6H), 2.24-2.14 (m, 1H), 2.05-1.97 (m, 1H), 1.71-1.44 (m, 7H), 1.17-1.04 (m, 2H).

후처리

  1. customThe reaction was partitioned between water (3 mL) and ether
  2. extractionThe aqueous layer was back extracted with ether
  3. filtrationThe resulting precipitate was filtered
  4. washrinsed with water (1 mL)
  5. customdried in vacuo

출처 및 근거

ORD 기록
ord-4ac8552bea3041bc895ccc3ccab10a3e
출처 데이터셋
uspto-grants-2012_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08258134B2

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